How much does having a warm/sunny have to do with the initial installation of a vinyl liner pool? We have a 20 x 40 new build pool, 6 foot deep end with an 8 inch safety ledge. We have started filling up our pool twice now (a slow fill with two hoses) and have had to drain it twice because the liner has had wrinkles in it....this has been over a period of the last 2 1/2 weeks. Our PB is blaming the colder weather. Any thoughts?